The change from the pre Qin to the Tang Dynasty pleases you 3Q

From the establishment of the Qin Dynasty to the fall of the Tang Dynasty, it took a total of 1,128 years.

The Qin Dynasty (221-207 BC) was the first unified dynasty in Chinese history developed by the Qin State during the Warring States Period.

The Tang Dynasty (618-907) was a unified Central Plains dynasty after the Sui Dynasty, with a total of 21 emperors and 289 years.

—1128.

Qin Dynasty: 221 BC – 206 BC

Han Dynasty: 202 BC – 220 AD

Tang Dynasty: 618 A.D. - 907 A.D

2. Brief analysis: Qin Dynasty to Han Dynasty 19 years, of which the Qin Dynasty existed for 15 years (221 BC 206 BC), after the fall of Qin, it experienced a 4-year Chu and Han dispute (206 BC 202 BC), in 202 BC, Liu Bang defeated Xiang Yu, ascended the throne and became the emperor, named the Great Han, known as the Western Han Dynasty, and the Han Dynasty officially stepped onto the stage of history. It is also said that the Western Han Dynasty began in 206 BC, but at this time Liu Bang had not yet officially proclaimed the emperor, so the four years of the Chu-Han dispute should be counted outside the reign of the Han Dynasty.

The Western Han Dynasty was founded by Liu Bang in 202 BC and died in 9 AD;

The Eastern Han Dynasty was founded in 25 A.D. by Liu Xiu, a member of the Western Han Dynasty, and died in 220 A.D.;

The Tang Dynasty was founded by Li Yuan in 618 A.D. and died in 907 A.D., when it was destroyed by the feudal town.

If calculated according to the time of the founding of the dynasty, the Western Han Dynasty and the Tang Dynasty were separated by 820 years, and the Eastern Han Dynasty and the Tang Dynasty were separated by 593 years.

Qin Dynasty: 221 BC – 206 BC

Han Dynasty: 202 BC – 220 AD

Tang Dynasty: 618 A.D. - 907 A.D

Altogether for 1128 years.

Qin Dynasty: 221 BC – 206 BC

Han Dynasty: 202 BC – 220 AD

Tang Dynasty: 618 A.D. - 907 A.D

From 221 BC to 907 AD, a total of 1128 years.

Qin Dynasty (221 BC, 207 AD).

Han Dynasty-Western Han Dynasty (202-8 BC).

New Dynasty (8-23 years).

Han Dynasty-Eastern Han Dynasty (23-220).

Tang Dynasty (618-690).

The Zhou Dynasty (690-705) was a dynasty established by Wu Zetian, with the country name "Zhou".

Tang Dynasty (705-907).

From the Qin Dynasty to the early Tang Dynasty, there were more than 830 years.

From the Anshi Rebellion to the end of the Tang Dynasty, it was a period of war.

The beginning of the war in the Tang Dynasty.

After the middle of the Tang Dynasty, some local military and political chiefs were based on the political situation of disobedience to ** orders. The feudal town is a defense town, which refers to a military town. The feudal court set up military towns to protect its own security, but the result of development often formed a confrontational separatist force, which was due to the inherent contradiction caused by the closed and private nature of the small peasant economy.

CausesDuring the reign of Emperor Xuanzong of the Tang Dynasty (712 756), due to the collapse of the Juntian system, the military system based on it also collapsed, and the conscription system began to be implemented. In order to prevent the invasion of the surrounding ethnic groups, the garrison town was greatly expanded, and the Jiedu envoy was established, and the military commander was given the power to control and supervise the prefectures and counties within the financial control, and a total of nine jiedu envoys and one Jingluo envoy (see Tianbao Ten Jiedu Envoys). In particular, the concentration of power in the northern provinces was even more significant, and An Lushan often launched rebellions by virtue of his position as the envoy of the three towns of Fanyang, Pinglu, and Hedong.